ENGLISH
Battery Switch - manual
Rev 00 10/2021
Battery Switch - manual
Table of Contents
1. Introduction ........................................................................................................................... 1
1.1. Features ...................................................................................................................... 1
1.2. System examples ............................................................................................................ 1
2. Installation ............................................................................................................................. 3
2.1. What's in the box ............................................................................................................ 3
2.2. Mounting ...................................................................................................................... 3
2.3. Label sticker .................................................................................................................. 4
2.4. Wiring ......................................................................................................................... 4
3. Operation .............................................................................................................................. 5
3.1. Battery Switch knob removal ............................................................................................... 5
4. Technical specifications ............................................................................................................ 6
4.1. Enclosure dimensions ...................................................................................................... 6
Battery Switch - manual
1. Introduction
The Battery Switch ON/OFF 275A is suitable for battery systems up to 48V.
It has an unique ergonomic and aesthetic knob design. The knob is removable for isolation or safety purposes.
The Battery Switch can be either surface or panel mounted, providing flexibility during install.
The Battery Switch meets the ISO8846 Ignition Protection standard and is suitable for use in an engine room.
1.1. Features
1. Interchangeable label stickers
2. Glass fibre reinforced nylon enclosure
3. Removable cable access window on all 4 sides
4. Removable ergonomic knob
Battery switch features
1.2. System examples
Battery Switch used to disconnect the house system from
the house battery. Use to preserve battery charge, system
maintenance or in an emergency.
Battery Switch used to disconnect an inverter from the
house battery. Use to preserve battery charge, system
maintenance or in an emergency.
Page 1 Introduction
Battery Switch - manual
Battery Switch used to disconnect alternator from the starter
battery. Use to preserve battery charge, system
maintenance or in an emergency.
ID Legend
A Battery Switch
B House battery
C House system DC loads and/or chargers
D Inverter
E Starter battery
F Engine and alternator
Battery Switch used to parallel connect the house battery to
the starter battery. Use in case of an emergency, like a flat
starter battery or a flat house battery.
Page 2 Introduction
Battery Switch - manual
2. Installation
2.1. What's in the box
The Battery Switch ships together with the following items:
• Battery Switch
• Instruction booklet with mounting template
• Interchangeable label sticker sheet
• 4 mounting screws
2.2. Mounting
The Battery Switch can be mounted in two ways:
1. Surface mount
2. Rear panel mount
Two different mounting ways.
The battery switch packaging contains a actual size cutout. Use this to mark the screw holes and in case of rear panel mount to
mark the hole for the knob. For the dimensions of the Battery Switch see the Enclosure dimensions [6] chapter.
1. Screw holes. 4 holes, one on each corner.
2. Mounting hole for rear panel mounting.
Mounting hole template. Not to scale, use the cutout from the Battery Switch packaging.
Page 3 Installation
Battery Switch - manual
2.3. Label sticker
The Battery Switch ships with a sticker sheet containing 16 different label stickers.
• Select the sticker that best corresponds with the circuit the Battery Switch is used in.
• Remove the sticker from the sticker sheet and place it on the knob of the Battery Switch as indicated in below image.
Label sticker sheet
2.4. Wiring
Wire the Battery Switch into the electrical system as follows:
• Disconnect the positive battery terminal.
Affixing label sticker
• Mount the Battery Switch onto the desired surface (surface mount) or panel (rear panel mount).
• Remove the appropriate side-plate for cable access. Do not remove the side-plate facing upward as water may get in from the
top.
• Use 120mm² (4/0 AWG) cables on all terminals to meet the Battery Switch current rating.
• Connect one terminal to the positive battery cable. Connect the other terminal to the positive cable of an alternator, load circuit
or second battery (depending on installation type).
• Make sure that all nuts and locker washers are properly attached and the nut is tightened with a recommended torque of 8Nm
(maximum 12.5Nm).
• Reconnect the positive battery terminal.
Page 4 Installation
Battery Switch - manual
3. Operation
1. Twist the knob clockwise to turn the switch on.
2. Turn the knob counter clockwise to turn switch off.
3. Turn the knob a further 30° counter clockwise to turn switch off and to remove the knob.
The three switch positions: ON, OFF and Remove
3.1. Battery Switch knob removal
The knob of the Battery Switch can be removed. Use this feature to prevent unwanted operation of the switch. When the knob is
removed, the switch is off.
Removal of the knob will prevent accidental switching, for example when system maintenance is carried out (safety), or when the
system is left unattended for a certain time (battery discharge prevention).
To remove the knob
1. Ensure that engines and equipment connected to the same DC circuit as the Battery Switch are turned off.
2. Turn the Battery Switch knob counter clockwise to the "OFF" position has been reached.
3. Turn the knob a further 30° counter clockwise until the "Remove" position has been reached
4. Pull the knob away from the Battery Switch.
Removal of the Battery Switch knob.
Page 5 Operation
Battery Switch - manual
4. Technical specifications
Technical specification Rating
Continuous DC current rating 275A
5 minute DC current rating 455A
Peak DC current (cranking) rating 1250A (10 sec)
DC voltage rating 48V
Terminal material Tin-plated copper
Hex nut material Tin-plated copper
Terminal diameter 3/8” (9.53mm)
Recommended torque 70 lbf·inch (8N.m)
Base material Glass fiber reinforced nylon
Weight 0.4lb (0.2kg)
Dimensions (l x w x h) 2.71 x 2.71 x 2.87 inch (69 x 69 x 73 mm)
Ignition protection ISO8846 / SAE J1171
4.1. Enclosure dimensions
Page 6 Technical specifications
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